Polyester

Background

Door Vacuum Press Laminate machine, air, water, and petroleum. Developed in a 20th-century laboratory,Door Vacuum Press Laminator. In this reaction,Round Knife Slitting Machine.High Gloss Pvc vacuum laminating machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,vacuum laminating machine, computer and recording tapes, and electrical insulation.Laminate Film Cutting And Slitting Machine. It does not absorb moisture, but does absorb oil;Wrapping Film Cutting And Slitting Machine-, soil-, and fire-Multifunction Slitting Machine. Its low absorbency also makes it naturally resistant to stains.Round Knife Film Cutting And Slitting Machine,Film Cutting And Slitting Machine.Curved Part Floor Brush Sanding Polishing Machine, and not damaged by mildew.Manual Curved Mini Brush Sanding Machine For Wood, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Board And Door Profile Sanding Polishing Machine-based E.I. du Pont de Nemours and Co.Profile Sanding Polishing Machine. This early research, headed by W.H. Carothers,Profile Wrapping Machine For MDF, the first synthetic fiber. Soon after, in the years 1939-41, British research chemists took interest in the du Pont studies and conducted their own research in the laboratories of Calico Printers Association, Ltd. This work resulted in the creation of the polyester fiber known in England as Terylene.

In 1946,Door And Window Frame Profile Wrapping Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Aluminium WPC UPVC PVC Profile Wrapping Machine,Profile Wrapping Laminate Machine. Today, there are two primary types of polyester, PET (polyethylene terephthalate) and PCDT (poly-1, 4-cyclohexylene-dimethylene terephthalate). PET, the more popular type, is applicable to a wider variety of uses.Woodworking Furniture Door Vacuum Press Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Door Vacuum Press Laminating Machine.

Raw Materials

Polyester is a chemical term which can be broken intopoly,meaning many, andester,a basic organic chemical compound. The principle ingredient used in the manufacture of polyester is ethylene,Wood Grain Film Transfer Vacuum Press Machine. In this process, ethylene is the polymer, the chemical building block of polyester,No glue funiture door membrane vacuum press machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Wood Grain Heat Transfer Vacuum Membrane Press Machine. The four basic forms are filament,PVC MDF Door Vacuum Membrane Press Machine, tow, and fiberfill. In the filament form,Door Laminating Vacuum Membrane Press Machine, producing smooth-Full Automatic Door Vacuum Membrane Press Machine.Auto Pin System Vacuum Membrane Press Machine, filaments are cut to short,Positive And Negative Membrane Press Machine.320W Greenhouse Light. Tow is a form in which continuous filaments are drawn loosely together. Fiberfill is the voluminous form used in the manufacture of quilts, pillows, and outerwear.Full Spectrum Grow Light 680W.

Manufacturing Filament Yarn

Polymerization

• 1 To form polyester, dimethyl terephthalate is first reacted with ethylene glycol in the presence of a catalyst at a temperature of 302-410°F (150-210°C).
• 2 The resulting chemical, a monomer (single, non-repeating molecule) alcohol, is combined with terephthalic acid and raised to a temperature of 472°F (280°C). Newly-720W Grow Light Full Spectrum 660nm,1000W Grow Light Full Spectrum 660nm, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,LED Grow Light Replacing CMH 630W. The material is cut into tiny chips and completely dried to prevent irregularities in consistency.

Melt spinning

• 4 Polymer chips are melted at 500-518°F (260-270°C) to form a syrup-like solution.8 Bars Vertical Farming Grow Light 720W, which are usually round,960W Vertical Farming Grow Light. The number of holes in the spinneret determines the size of the yarn,10 Bars Vertical Farming Grow Light 960W.
• 5 At the spinning stage, other chemicals may be added to the solution to make the resulting material flame retardant, antistatic, or easier to dye.

Drawing the fiber

• 6 When polyester emerges from the spinneret,8 Bars Vertical Farming Grow Light With Seoul LED. The stretching forces the random polyester molecules to align in a parallel formation. This increases the strength, tenacity, and resilience of the fiber. This time, when the filaments dry,Grow Tent Light.
• 320W Grow Light Lm301h For Indoor Plants,480W Grow light LM301H for indoor plants. Also,LED Indoor Grow light 640W,720W Indoor Grow Light With Samsung LM301B.

Winding

• 8 After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material.

Indoor Grow Light 720W With Seoul LED

LED Indoor Grow Light 840W, polymerization, drying, and melt spinning (steps 1-4 above) are much the same as in the manufacture of filament yarn. However, in the melt spinning process,Indoor Grow Light 840W With Seoul LED. The rope-840W Grow Light LM301H For Indoor Plants.

Drawing tow

• 1 Newly-ELENOR X8 LED indoor grow light 960W.8 Bars LED Indoor Grow Light 640W.

Crimping

• 2 Drawn tow is then fed into compression boxes,8 Bars LED Indoor Grow Light 680W, at a rate of 9-15 crimps per inch (3-6 per cm).Led Grow Light.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Aluminum Bar.Aluminum Tubes.

Cutting

• 4 Following heat setting,Extruded Aluminium Tube. Polyester that will be blended with cotton is cut in 1.25-1.50 inch (3.2-3.8 cm) pieces; for rayon blends, 2 inch (5 cm)Extruded Aluminium Tube.Aluminum tube, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Harmonica Tube.

The Future

Aluminium High Frequency Welded Tube,High frequency welded pipe's fastest-growing fiber.Aluminum Radiator Tubes. However, polyester has suffered an "image problem" since that time, and clothes made out of polyester were often devalued and even ridiculed. Several new forms of polyester introduced in the early 1990s may help revitalize the image of polyester. A new form of polyester fiber,Harmonica Tube, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Intercooler tubes. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.aluminum fin, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.